345849631 has 4 divisors (see below), whose sum is σ = 347641792. Its totient is φ = 344057472.

The previous prime is 345849617. The next prime is 345849667. The reversal of 345849631 is 136948543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136948543 = 1009 ⋅135727.

It is a cyclic number.

It is not a de Polignac number, because 345849631 - 2⁵ = 345849599 is a prime.

It is a super-2 number, since 2×345849631² = 239223934525672322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345849601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 895791 + ... + 896176.

It is an arithmetic number, because the mean of its divisors is an integer number (86910448).

Almost surely, 2^345849631 is an apocalyptic number.

345849631 is a deficient number, since it is larger than the sum of its proper divisors (1792161).

345849631 is a wasteful number, since it uses less digits than its factorization.

345849631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792160.

The product of its digits is 311040, while the sum is 43.

The square root of 345849631 is about 18597.0328547325. The cubic root of 345849631 is about 701.9331807354.

The spelling of 345849631 in words is "three hundred forty-five million, eight hundred forty-nine thousand, six hundred thirty-one".